---
title: etcd
id: etcd
date: 2018-04-12
full_link: /docs/tasks/administer-cluster/configure-upgrade-etcd/
short_description: >
  etcd 是兼具一致性和高可用性的键值数据库，用作保存 Kubernetes 所有集群数据的后台数据库。

aka: 
tags:
- architecture
- storage
---

<!--
---
title: etcd
id: etcd
date: 2018-04-12
full_link: /docs/tasks/administer-cluster/configure-upgrade-etcd/
short_description: >
  Consistent and highly-available key value store used as Kubernetes' backing store for all cluster data.

aka: 
tags:
- architecture
- storage
---
-->

<!--
 Consistent and highly-available key value store used as Kubernetes' backing store for all cluster data.
-->

etcd 是兼具一致性和高可用性的键值数据库，可以作为保存 Kubernetes 所有集群数据的后台数据库。

<!--more--> 

<!--
Always have a backup plan for etcd's data for your Kubernetes cluster. For in-depth information on etcd, see [etcd documentation](https://github.com/coreos/etcd/blob/master/Documentation/docs.md).
-->

您的 Kubernetes 集群的 etcd 数据库通常需要有个备份计划。要了解 etcd 更深层次的信息，请参考 [etcd 文档](https://github.com/coreos/etcd/blob/master/Documentation/docs.md)。
